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HPE Networking CVE-2026-79888

| EUVDEUVD-2026-108388 HIGH
Buffer Overflow (CWE-119)
2026-10-22 security-alert@hpe.com GHSA-x5mh-3qw6-pvx3
8.1
CVSS 3.1 · Vendor: hpe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Reach affected HPE networking service over network
  2. Exploit
    Satisfy high-complexity trigger condition
  3. Execution
    Exploit unauthenticated flaw
  4. Impact
    Compromise confidentiality, integrity and availability

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Per the CVSS vector the flaw is network-reachable (AV:N) and unauthenticated (PR:N) with no user interaction (UI:N), so it is exposed to any attacker who can reach the affected HPE networking service. The limiting factor is High attack complexity (AC:H): the vector indicates one or more specific conditions must hold for the attack to succeed, but the available sources do not describe what those conditions are, so the exact prerequisite cannot be named. The affected product name and the configuration or deployment mode that exposes the flaw are not stated in the input and must be confirmed from HPE bulletin hpesbnw05162en_us.

Impact

The vendor-supplied CVSS 3.1 vector (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, base 8.1) describes a network-reachable, unauthenticated flaw requiring no user interaction but carrying High attack complexity (AC:H), with full High impact to confidentiality, integrity and availability. The AC:H metric is the single factor holding the score below critical - it signals that conditions beyond the attacker's direct control must be met to trigger the flaw, though the available sources do not describe what those conditions are. On exploitation signals the picture is sparse and largely favorable to defenders: there is no EPSS probability supplied, no CISA KEV listing, and no PoC or exploit reference in the input, so exploitation status is 'no public exploit identified at time of analysis.' The vuln.today priority Decision label is 'this_week' - meaningful urgency but explicitly not 'act_now' or 'emergency.' The most important caveat is that NO description was provided and CWE is N/A, so the mechanism, affected HPE product, and affected versions are unknown from the input; the only evidence of impact scope is the single HPE networking security bulletin reference. There is also a signal tension worth flagging: the only tag is 'Information Disclosure,' yet the CVSS vector claims High integrity AND availability impact - verify against the HPE bulletin, because a pure information-disclosure issue would not normally carry I:H/A:H.

Exploit ScenarioDerived

A remote, unauthenticated attacker reaches the affected HPE networking product over the network and, after satisfying an unspecified high-complexity precondition, triggers the flaw to compromise confidentiality, integrity and availability. No public exploit code or PoC reference is present in the supplied data. Because the vector is AV:N/PR:N/UI:N, no credentials or victim interaction are required, but AC:H means the attack is not trivially repeatable on demand.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 22, 2026

High-severity network-reachable compromise of the HPE product covered by bulletin hpesbnw05162en_us can affect confidentiality, integrity, and availability, though the available data provides no public description of the flaw. The CVSS 3.1 vector rates it 8.1 with AV:N/AC:H/PR:N/UI:N, so unauthenticated remote exploitation with no user interaction is possible only when unspecified high-complexity preconditions are met. No public exploit code or CISA KEV entry is identified, and the HPE advisory is the authoritative source for affected versions and fixes.

RemediationAI

No vendor-released patch, fixed version, or product-specific workaround is identified in the supplied data; HPE bulletin hpesbnw05162en_us is the authoritative source for patched releases and mitigation instructions. Because the affected product and exposure mode are not stated, no exact upgrade target can be given; review the bulletin and apply the fixed release for every listed branch. As interim containment, restrict network reachability to the affected HPE service to trusted management networks, understanding that this can break legitimate remote administration and does not protect against attackers already positioned on that trusted network.

Affected VersionsENISA

Unknown product 8.10.0.0 ≤8.10.0.23
Unknown product 8.12.0.0 ≤8.13.3.0

Affected Packages

euvd unknown_product no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The input does not name the affected HPE product line, the vulnerable component, a CWE class, or CPE identifiers, and the description is empty; therefore the technical trigger and underlying implementation are not described in the available sources. What is known is the rated attack surface: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H means the flaw is reachable over the network without authentication or user interaction, but its High attack complexity indicates one or more specific conditions must hold for success; those conditions are not documented. The Information Disclosure tag aligns with the high confidentiality impact, but the same vector also assigns high integrity and availability impact, so the tag does not capture the full rated effect. The HPE bulletin hpesbnw05162en_us must be consulted to identify the affected service, version range, and root cause.

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Severity by source

Vendor (hpe) PRIMARY 8.1 HIGH
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (hpe) · only source for this CVE.

CVSS VectorVendor: hpe

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

No description provided

Executive ViewAI

Why It Matters

HPE has disclosed a high-severity vulnerability (CVE-2026-79888) in a product covered by bulletin hpesbnw05162en_us, rated CVSS 8.1, with no public description or vendor patch currently available. The flaw allows unauthenticated, remote exploitation only when specific high-complexity preconditions are met, potentially impacting confidentiality, integrity, and availability. Security leadership should treat this as a material risk pending further details from HPE, as affected systems could be exposed to targeted attacks.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: restrict network access to affected systems (especially from untrusted networks), enable logging and monitoring for exploitation indicators, apply HPE-provided workarounds if available, and maintain enhanced monitoring until a patch is released.

Threat Intelligence Overview

EPSS Score
0.2%
Top 86% exploitable
Prevalence
Medium
HPE enterprise networking product (bulletin 'hpesbnw'); common in enterprises, not ubiquitous
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +40
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

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